Arbhaka is one of the kings belonging to Śiśunāgavaṁśa (Sisunagavamsa, the Sisunaga dynasty), who would be ruling in Kaliyuga (the Era of Kali)–as mentioned in Purāṇa (Purana). He is the son of king Ajātaśatru (Ajatasatru), and father of Udayana. In the southern version of Viṣṇupurāṇa (Vishnupurana), the name is mentioned as Arbhaka, though the name reads as ‘Darbhaka’ in the Bengal recension, seems to be more acceptable. According to Bengal recension, Udayāśva (Udayaswa) is the son of Darbhaka.